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F34.1 ICD-10-CM Code: Dysthymic disorder

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
6 inclusion terms · 1 Excludes2
Risk adjustment
RxHCC V08 category 132

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for F34.1 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Depressive neurosis
  • Depressive personality disorder
  • Dysthymia
  • Neurotic depression
  • Persistent anxiety depression
  • Persistent depressive disorder

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Coder workflow for F34.1

MedCoder structured workflow — derived from this code’s own official record

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

Official instructions as workflow

  • Excludes2 — not part of F34.1(1 note)

    Coding workflow: The conditions named in this note are not included in F34.1. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareF41.8

    See the official tabular notes · Guidelines I.A.12.b

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Dysthymic disorder is a billable ICD-10-CM diagnosis code (F34.1).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (18)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name F34.1 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 4 Excludes2 notes: F06.3 — Mood disorder due to known physiological condition (via F34.-), F90 — Attention-deficit hyperactivity disorders (via F34.-), F91 — Conduct disorders (via F34.-), F93.0 — Separation anxiety disorder of childhood (via F34.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 1 MS-DRG: DRG 881 (MDC 19).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MBD002 — Depressive disorders (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Depressive disorders).

F06.34 — Mood disorder due to known physiological condition with mixed features, F32.0 — Major depressive disorder, single episode, mild, F32.1 — Major depressive disorder, single episode, moderate, F32.2 — Major depressive disorder, single episode, severe without psychotic features, F32.3 — Major depressive disorder, single episode, severe with psychotic features, F32.4 — Major depressive disorder, single episode, in partial remission, F32.8 — Other depressive episodes, F32.81 — Premenstrual dysphoric disorder, F32.89 — Other specified depressive episodes, F32.9 — Major depressive disorder, single episode, unspecified, F32.A — Depression, unspecified, F33.0 — Major depressive disorder, recurrent, mild, F33.1 — Major depressive disorder, recurrent, moderate, F33.2 — Major depressive disorder, recurrent severe without psychotic features, F33.3 — Major depressive disorder, recurrent, severe with psychotic symptoms, F33.41 — Major depressive disorder, recurrent, in partial remission, F33.8 — Other recurrent depressive disorders, F33.9 — Major depressive disorder, recurrent, unspecified, F53.0 — Postpartum depression, O90.6 — Postpartum mood disturbance, +2 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Neurosis, neurotic”, “State”, “Depression”, …; these codes share that main term but sit in a different category of the Tabular List.

F31.4 — Bipolar disorder, current episode depressed, severe, without psychotic features (depressive, affective), F32.2 — Major depressive disorder, single episode, severe without psychotic features (agitated), F32.3 — Major depressive disorder, single episode, severe with psychotic features (psychotic), F32.89 — Other specified depressive episodes (masked), F32.9 — Major depressive disorder, single episode, unspecified (major), F32.A — Depression, unspecified, F33.2 — Major depressive disorder, recurrent severe without psychotic features (vital), F33.3 — Major depressive disorder, recurrent, severe with psychotic symptoms (psychotic, recurrent), F33.8 — Other recurrent depressive disorders (atypical, recurrent episode), F33.9 — Major depressive disorder, recurrent, unspecified (monopolar), F40.10 — Social phobia, unspecified (social), F40.11 — Social phobia, generalized (social, generalized), F40.9 — Phobic anxiety disorder, unspecified (phobic), F41.0 — Panic disorder [episodic paroxysmal anxiety] (panic), F41.1 — Generalized anxiety disorder (anxiety), F41.8 — Other specified anxiety disorders (anxiety), F42.2 — Mixed obsessional thoughts and acts (compulsive, mixed with obsessional thoughts), F42.8 — Other obsessive-compulsive disorder (compulsive), F43.0 — Acute stress reaction (crisis), F43.10 — Post-traumatic stress disorder, unspecified (traumatic), +99 more

Contextual Map

Every relationship of F34.1 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run F34.1 with these 5 related codes in Claim Check

Hierarchy

Excludes2

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 19 — Mental Diseases and Disorders[MDC crossing]: “Mental Diseases and Disorders — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026

Index entries (18)

  • Depression (acute) (mental), anxiety, persistent[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Depression (acute) (mental), nervous[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Depression (acute) (mental), neurotic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Depression (acute) (mental), psychoneurotic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Disorder (of), depressive, persistent[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Disorder (of), dysthymic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Disorder (of), mood, persistent, dysthymia[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Disorder (of), personality, depressive[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • and 10 more

Nearest codes

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "F34.1 — Dysthymic disorder." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/f34.1-dysthymic-disorder

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Dysthymic disorder

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to F34.1 in its code family, with their registry titles.

View all codes in the F34 family